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AJvYcCUknILUJIO2SFboFmcR/pfpWnGAAI3ZeTbeCQsKY2nFL3mZRhIBjV+yHripffbGRjagOmt9FHHOkuxJcw8=@vger.kernel.org X-Gm-Message-State: AOJu0YwpiuMjF02T32HYKg8tYzcUCz1LXn9+MbJIBUINDAByIAdYU0+n 5VEHIK9oluM+TjANMvGRbg7e+kbgkuJUK2YFwwLeEKTOZInh0DiOIwG2dZ+vPuhoeJ++Qif2Jc9 OutkNC7Dj+kSgp5LRPD7Fhj1aIdaSgpDxwPM9qODYBBLnRQynxH8LOEykyG4= X-Google-Smtp-Source: AGHT+IEhe7MIMvRiGFhEOeSNHk3ygWQ/LO0p1qk0BIzsOsoSEaRhYVc6ez9Wv66KwneugsuLPI8UnHA4BS0jcr5BkPQLEvSnQqrW Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:1594:b0:86d:f35:a100 with SMTP id ca18e2360f4ac-87977f7627emr565277339f.5.1752252264829; Fri, 11 Jul 2025 09:44:24 -0700 (PDT) Date: Fri, 11 Jul 2025 09:44:24 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68713f68.a00a0220.26a83e.0055.GAE@google.com> Subject: [syzbot] [udf?] WARNING in udf_process_sequence From: syzbot To: jack@suse.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: bc9ff192a6c9 Merge tag 'net-6.16-rc6' of git://git.kernel... git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=163020f0580000 kernel config: https://syzkaller.appspot.com/x/.config?x=bd2783a0a99d4ed0 dashboard link: https://syzkaller.appspot.com/bug?extid=478f2c1a6f0f447a46bb compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1406868c580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14160d82580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/a1e9eedcd43a/disk-bc9ff192.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/422cc2173887/vmlinux-bc9ff192.xz kernel image: https://storage.googleapis.com/syzbot-assets/baea2fd007dc/bzImage-bc9ff192.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/c5472edae325/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+478f2c1a6f0f447a46bb@syzkaller.appspotmail.com loop0: detected capacity change from 0 to 2048 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5837 at mm/page_alloc.c:4935 __alloc_frozen_pages_noprof+0x2c8/0x370 mm/page_alloc.c:4935 Modules linked in: CPU: 1 UID: 0 PID: 5837 Comm: syz-executor235 Not tainted 6.16.0-rc5-syzkaller-00121-gbc9ff192a6c9 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:__alloc_frozen_pages_noprof+0x2c8/0x370 mm/page_alloc.c:4935 Code: 74 10 4c 89 e7 89 54 24 0c e8 04 14 0d 00 8b 54 24 0c 49 83 3c 24 00 0f 85 a5 fe ff ff e9 a6 fe ff ff c6 05 ae 3c 76 0d 01 90 <0f> 0b 90 e9 18 ff ff ff a9 00 00 08 00 48 8b 4c 24 10 4c 8d 44 24 RSP: 0018:ffffc9000419f460 EFLAGS: 00010246 RAX: ffffc9000419f400 RBX: 000000000000001b RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc9000419f4c8 RBP: ffffc9000419f550 R08: ffffc9000419f4c7 R09: 0000000000000000 R10: ffffc9000419f4a0 R11: fffff52000833e99 R12: 0000000000000000 R13: 1ffff92000833e90 R14: 0000000000040dc0 R15: dffffc0000000000 FS: 0000555585efa380(0000) GS:ffff888125d4f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd725aa000 CR3: 0000000072cd0000 CR4: 00000000003526f0 Call Trace: __alloc_pages_noprof+0xa/0x30 mm/page_alloc.c:4993 __alloc_pages_node_noprof include/linux/gfp.h:284 [inline] alloc_pages_node_noprof include/linux/gfp.h:311 [inline] ___kmalloc_large_node+0x85/0x210 mm/slub.c:4272 __kmalloc_large_node_noprof+0x18/0x90 mm/slub.c:4300 __do_kmalloc_node mm/slub.c:4316 [inline] __kmalloc_noprof+0x36f/0x4f0 mm/slub.c:4340 kmalloc_noprof include/linux/slab.h:909 [inline] kmalloc_array_noprof include/linux/slab.h:948 [inline] udf_sb_alloc_partition_maps fs/udf/super.c:323 [inline] udf_load_logicalvol fs/udf/super.c:1464 [inline] udf_process_sequence+0x1d46/0x4840 fs/udf/super.c:1828 udf_load_sequence fs/udf/super.c:1875 [inline] udf_check_anchor_block+0x28e/0x550 fs/udf/super.c:1910 udf_scan_anchors fs/udf/super.c:1943 [inline] udf_load_vrs+0x6e3/0xf20 fs/udf/super.c:2024 udf_fill_super+0x5ad/0x17a0 fs/udf/super.c:2192 get_tree_bdev_flags+0x40b/0x4d0 fs/super.c:1681 vfs_get_tree+0x92/0x2b0 fs/super.c:1804 do_new_mount+0x24a/0xa40 fs/namespace.c:3902 do_mount fs/namespace.c:4239 [inline] __do_sys_mount fs/namespace.c:4450 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4427 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6162f1f8fa Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd725a9028 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffd725a9040 RCX: 00007f6162f1f8fa RDX: 0000200000000c40 RSI: 0000200000000040 RDI: 00007ffd725a9040 RBP: 0000200000000040 R08: 00007ffd725a9080 R09: 0000000000000c7b R10: 0000000000010480 R11: 0000000000000282 R12: 0000200000000c40 R13: 00007ffd725a9080 R14: 0000000000000003 R15: 0000000000010480 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup